Question: 10. PCBs, continued Refer to Exercise 9. a. Calculate b and 1b if the true mean ppm of PCBs is 6 ppm. b. Calculate b

10. PCBs, continued Refer to Exercise 9.

a. Calculate b and 1−b if the true mean ppm of PCBs is 6 ppm.

b. Calculate b and 1−b if the true mean ppm of PCBs is 7 ppm.

c. Find the power, 1−b, when m 58, 9,10, and 12. Use these values to construct a power curve for the test in Exercise 9.

d. For what values of m does this test have power greater than or equal to .90?

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